32 Chapter 4 Operator Control And Display Panel
Liebert NXC 30kVA And 40kVA UPS User Manual
Display UPS accumulated run time
Display UPS accumulated run time on bypass
Provide UPS inverter, rectifier and monitoring software versions
Provide UPS model information, for example, 208V-60Hz
Keypad window
The functions of the menu keys (F1 ~ F5) for the current screen are shown by self-explanatory icons in the keypad
window as appropriate.
4.4 Prompt Window
A prompt window is displayed during the operation of the system to alert you to certain conditions or to require your
confirmation of a command. The prompts are provided in Table 4-8.
Table 4-8 Prompts and meanings
Transfer with interrupt, confirm or cancel
The load executes interval transfer between the inverter and bypass
The load is too high to be transferred with
The total load must be less than the capacity of one UPS to allow a parallel
system to perform an interrupted transfer from bypass to inverter
This operation leads to output shutdown,
The bypass is abnormal, turning off the inverter will cause the load to be
disenergized
This operation leads to inverter overload,
confirm or cancel
Turning off this inverter will lead to the overload of the remaining inverter(s) in a
parallel system
Turn on more UPS to carry current load
The number of inverters already turned on is insufficient to carry the existing
load. The user is required to turn on more UPSs
Battery will be depleted, confirm or cancel
If you select battery maintenance test, the battery will discharge until the UPS
shuts down. This prompt appears to require your confirmation. Canceling the test
will ends the test and transfers the UPS to inverter mode
System self test finished, everything is OK No action required
Please check the current warnings Check the active alarm messages
Enter control password Required for battery or UPS test (default: 12345)
Battery Self Test aborted, conditions not met
Battery self-test condition is not met. Please check if the battery is in boost
charge state and the load is more than 20%
Battery Refresh Charge aborted, conditions
not met
This prompt appears when you select the Freshening charge command while the
a battery freshening charge condition (such as no battery, charger failure) is not
met
4.5 Alarm List
Table 4-9 provides the complete list of UPS alarm messages for display either on the 'Event' menu or on the 'Records'
menu described in Table 4-7.
Table 4-9 UPS alarm list
FAULT CLEAR key on the operator control and display panel pressed
The rectifier starts up and is in synchronization
The inverter starts up and is in synchronization
ON key on the operator control and display panel pressed to turn on the inverter
OFF key on the operator control and display panel pressed to turn off the inverter
The inverter failed to turn on when the ON key is pressed. This may be the result of an invalid operation
(maintenance bypass switch closed) or DC bus or rectifier not ready
Owing to low DC bus voltage, the rectifier will report this alarm
ALARM CLEAR key on the operator control and display panel pressed
ALARM CLEAR key on the operator control and display panel pressed in alarm silence state
The UPS is in bypass mode
The UPS is in normal mode
The UPS is in battery mode
UPS shutdown with no output power
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